Built-in battery keeps memory for up to 90 days during power outages. pic-control 2. Button Functions P (Timer): Enter programming mode. Set the day of the week. H+ (Hour) / M+ (Minute) / S+ (Second): Adjust specific time units. Clock (Circle Icon): Exit programming and return to current time. C/R (Cancel/Recall): Clear a programmed time or the screen (press 4 times). Cycle between pic-control 3. Setup and Programming Unlock the Device The screen often locks automatically. Press the to remove the "a" or "lock" symbol. pic-control Step 1: Set Current Time
: Press D+ to select the days, then H+ and M+ for the specific hour and minute. sinotimer tm630s manual